I can supersede you can supersede he can supersede we can supersede you can supersede they can supersede
V-ing form
I can be superseding you can be superseding he can be superseding we can be superseding you can be superseding they can be superseding
Perfect
I can have superseded you can have superseded he can have superseded we can have superseded you can have superseded they can have superseded
V-ing perfect
I can have been superseding you can have been superseding he can have been superseding we can have been superseding you can have been superseding they can have been superseding
Negation
Simple form
I cannot supersede you cannot supersede he cannot supersede we cannot supersede you cannot supersede they cannot supersede
V-ing form
I cannot be superseding you cannot be superseding he cannot be superseding we cannot be superseding you cannot be superseding they cannot be superseding
Perfect
I cannot have superseded you cannot have superseded he cannot have superseded we cannot have superseded you cannot have superseded they cannot have superseded
V-ing perfect
I cannot have been superseding you cannot have been superseding he cannot have been superseding we cannot have been superseding you cannot have been superseding they cannot have been superseding
Interrogative form
Simple form
can I supersede? can you supersede? can he supersede? can we supersede? can you supersede? can they supersede?
V-ing form
can I be superseding? can you be superseding? can he be superseding? can we be superseding? can you be superseding? can they be superseding?
Perfect
can I have superseded? can you have superseded? can he have superseded? can we have superseded? can you have superseded? can they have superseded?
V-ing perfect
can I have been superseding? can you have been superseding? can he have been superseding? can we have been superseding? can you have been superseding? can they have been superseding?
Interro-negative form
Simple form
can I not supersede? can you not supersede? can he not supersede? can we not supersede? can you not supersede? can they not supersede?
V-ing form
can I not be superseding? can you not be superseding? can he not be superseding? can we not be superseding? can you not be superseding? can they not be superseding?
Perfect
can I not have superseded? can you not have superseded? can he not have superseded? can we not have superseded? can you not have superseded? can they not have superseded?
V-ing perfect
can I not have been superseding? can you not have been superseding? can he not have been superseding? can we not have been superseding? can you not have been superseding? can they not have been superseding?